Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
day dinh » dao dinh, day danh, dang dinh
thuc day » thuc dan, thuc vat
hieu ve » hieu va, hieu van
dinh le » dinh ve, dinh ly, dinh ket
ve phap » va phap, de phap, ve phan
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach
vu sach » vu bach, vu khach
le cua » ly cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((vu sach) OR (su sach)))) ty nang xa hoi. hieu ve phap thuc day dinh le cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (((vu sach) OR (su sach)))) ty nang xa hoi. hieu ve phap thuc day dinh le cua te~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((vu sach) OR (su sach)))) ty nang xa hoi. hieu ve phap thuc day dinh le cua te*.